Dynamics in a two-dimensional core-softened fluid

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Abstract

The dynamical properties of a model one-component core-softened fluid with purely repulsive interactions are found to be very complex. At low temperature the fluid structure exhibits cluster motifs including dimers, stripes, and polygons, depending on density. Single-particle diffusion and the velocity, shear-stress, and wave-vector-dependent current correlation functions have all been calculated using molecular dynamics simulations. The results highlight the presence of well-resolved single-particle and collective motions, which is remarkable for what is essentially a "simple" one-component fluid.

Original languageEnglish
Article number031507
Pages (from-to)-
Number of pages8
JournalPhysical Review E - Statistical, Nonlinear and Soft Matter Physics
Volume71
Issue number3
DOIs
Publication statusPublished - Mar 2005

Keywords

  • LIQUID PHASE-TRANSITION
  • RELAXATION
  • DIFFUSION
  • BEHAVIOR
  • WATER

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